单项选择题

Your compass and clock are the most essential instruments in sailing.

A．equipments
B．tools
C．instructions
D．opportunities
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单项选择题
He was said to have been removed from the position of manager for a recent conflict with an important customer.
A．dismissed
B．released
C．picked
D．exposed
单项选择题
Do you believe these two intimate friends used to be enemies
A．bearable
B．internal
C．close
D．believable
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